[rescue] VMS for VAXstation

Cory Smelosky b4 at gewt.net
Wed Jul 31 21:29:31 CDT 2013

On Wed, 1 Aug 2013, Scott Quinn wrote:

>    On Mon, 29 Jul 2013, Steve Sandau wrote:
>>    If memory serves, and it may not (as I'm now of a "certain age"),
>> the limitation was one where if a core-dump was required it could
>> overwrite filesystem parts that would otherwise operate normally.
> The issue is that the firmware will loop around to zero after it reaches the
> maximum size addressable by the
> 6-byte commands. Anything needed for booting needs to be under the limit or
> VMB can't get at it.
> In addition dumps done by the firmware that extend past the boundary will loop
> back to block 0

Is the firmware source up on Bitsavers?  I wonder if it could be modified 
to accept >6-byte commands.

> >    I believe the limitation is on the boot drive only; others can
>> be larger.  I haven't tried this, however, as I followed the cautious
>> path and laid in a stock of sub-1GB drives a number of years ago.
>> Besides, with VMS, amassing a gigabyte of data would likely take
>> decades.
> Yep, boot drive only.
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Cory Smelosky
http://gewt.net Personal stuff
http://gimme-sympathy.org Projects

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